[INFO] fetching crate ffmpeg-next 4.4.0...
[INFO] checking ffmpeg-next-4.4.0 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate ffmpeg-next 4.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ffmpeg-next 4.4.0 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ffmpeg-next 4.4.0
[INFO] finished tweaking crates.io crate ffmpeg-next 4.4.0
[INFO] tweaked toml for crates.io crate ffmpeg-next 4.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate ffmpeg-next 4.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded color_quant v1.1.0
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.22
[INFO] [stderr]   Downloaded gif v0.9.2
[INFO] [stderr]   Downloaded png v0.6.2
[INFO] [stderr]   Downloaded inflate v0.1.1
[INFO] [stderr]   Downloaded image v0.12.4
[INFO] [stderr]   Downloaded ffmpeg-sys-next v4.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c53bf73778a9000c40f539374fc45f84459c7ec373dd99ec04fb735e3b814eb
[INFO] running `Command { std: "docker" "start" "-a" "7c53bf73778a9000c40f539374fc45f84459c7ec373dd99ec04fb735e3b814eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c53bf73778a9000c40f539374fc45f84459c7ec373dd99ec04fb735e3b814eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c53bf73778a9000c40f539374fc45f84459c7ec373dd99ec04fb735e3b814eb", kill_on_drop: false }`
[INFO] [stdout] 7c53bf73778a9000c40f539374fc45f84459c7ec373dd99ec04fb735e3b814eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8478197f6ca4e941dcbb52c896555c7ca9f83cff9ddec02cad3790afe23048b0
[INFO] running `Command { std: "docker" "start" "-a" "8478197f6ca4e941dcbb52c896555c7ca9f83cff9ddec02cad3790afe23048b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling ffmpeg-next v4.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling ffmpeg-sys-next v4.4.0
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/codec/context.rs:14:26
[INFO] [stdout]    |
[INFO] [stdout] 14 |     owner: Option<Rc<dyn Drop>>,
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/codec/context.rs:20:71
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub unsafe fn wrap(ptr: *mut AVCodecContext, owner: Option<Rc<dyn Drop>>) -> Self {
[INFO] [stdout]    |                                                                       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]  --> src/codec/parameters.rs:9:26
[INFO] [stdout]   |
[INFO] [stdout] 9 |     owner: Option<Rc<dyn Drop>>,
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/codec/parameters.rs:15:74
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub unsafe fn wrap(ptr: *mut AVCodecParameters, owner: Option<Rc<dyn Drop>>) -> Self {
[INFO] [stdout]    |                                                                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/codec/context.rs:14:26
[INFO] [stdout]    |
[INFO] [stdout] 14 |     owner: Option<Rc<dyn Drop>>,
[INFO] [stdout]    |                          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dyn_drop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/codec/context.rs:20:71
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub unsafe fn wrap(ptr: *mut AVCodecContext, owner: Option<Rc<dyn Drop>>) -> Self {
[INFO] [stdout]    |                                                                       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]  --> src/codec/parameters.rs:9:26
[INFO] [stdout]   |
[INFO] [stdout] 9 |     owner: Option<Rc<dyn Drop>>,
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: types that do not implement `Drop` can still have drop glue, consider instead using `std::mem::needs_drop` to detect whether a type is trivially dropped
[INFO] [stdout]   --> src/codec/parameters.rs:15:74
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub unsafe fn wrap(ptr: *mut AVCodecParameters, owner: Option<Rc<dyn Drop>>) -> Self {
[INFO] [stdout]    |                                                                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.38s
[INFO] running `Command { std: "docker" "inspect" "8478197f6ca4e941dcbb52c896555c7ca9f83cff9ddec02cad3790afe23048b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8478197f6ca4e941dcbb52c896555c7ca9f83cff9ddec02cad3790afe23048b0", kill_on_drop: false }`
[INFO] [stdout] 8478197f6ca4e941dcbb52c896555c7ca9f83cff9ddec02cad3790afe23048b0